Lubricating-axle.



G. L. BIRCH.

LumcArmG AxLE.

APPLICATION FILED OCT. H1913.

Patented Feb. 20, 1917.

GEORGL. Bitner-I, or wrLToN, 'KE'nTUcK'YQlI i LUBRIoATING-A'xnn. v l. yy' l 'v Specication of Letterszlatent..

To all 107mm t may concern: v i Be it knownthat I, GEORGE L. BIRCH, acitizen of [the United States, Yresiding'at VVilton, in the county ofKnox and State of Kentucky, have invented certain new and usefulImprovem entsI in! Lubricating-Axles, of which the followingis aspecification. This invention relates to trolley harps, and moreparticularly :to anovel and eflicient lubricating means therefor. i l fAn. object of this invention is toA associate with the harp suitablelubricating means Vso as 4to facilitate the rotation of .the trolleywheel, means being likewise provided tol de-v crease tie wear on theharp and at'the same time providing. a deviceJ comprising butcomparatively few parts which may be readily Aassociated for' performingthe, desired function. a a n L 1:2 Other objects as well-asthe nature,characteristic features and scope of my invention will be more readilyunderstood from the following description takenin connection with theaccompanying drawings and pointed out in the claim forming a part ofthis specification.

Referring to the drawings Figure 1 is a side elevation of a harpconstructed in accordance with my invention;

Fig. 2 is a sectional view taken on the line 2`2 of Fig. l; and

Fig/3 is a perspective view ofthe improved wear plate used in thepresent invention.

lIn the drawings wherein is illustrated the preferred embodiment of thepresent invention, my improved trolley harp is preferably of asubstantially U-shaped configuration as indicated at 5 and shown toadvantage in Fig. 2, the one end of the arm 6 of the body portion beingenlarged as at 7 and provided with a transverse opening therethroughwhich communicates with a cut-out portion 8 on the outer face thereof.The opposite arm 9 of the body portion 5 is preferably enlarged andprovided with a longitudinally extending lubricating chamber or bore l0the lower end of which is preferably screw-threaded as indicated at 11,the upper end thereof communicating with a transverse opening 12, andsaid transverse opening communicating on the outer end thereof with acut-out portion 13.

Adjustably mounted in the chamber 10, is a screw-bolt 14 the externalthreads thereof being engaged with the internal threads Application ledOctoberfl, 1913.

"provided with A:18 which Ais of Patented 'seriaino.792,s37.rmi of thearm9, said screw-bolt'beingpro-H vided in order trolley harp,!themarginal edger thereof coniorming tothe configuration of themarginaledges of said harp and said pole plate, said` wear plate being-providedwith an opening 17 therein through which the swivel bolt `18 lpasses soasto en age .the trolley plate therewith, vsaid swive bolt extendinglupwardly through the harpl and having engagement" therewith, lthelo'wer endA of said boltprovided with' anA eye through which is engagedthe trolley cable,

a second opening "or" aperture a diameter smaller than that of the`opening` 17 vand has the one end thereof preferably tapered, in orderthat the rivet or screw which is associated therewith, may becountersunk so as to allow for th free movement of the harp on thetrolley po e.

Mounted in proximity to the upper end of the'trolley harp 5, is an axle19 which is preferably hollow as indicatedat 20, for a portion of itslength, said hollow portion having' a pair of apertures 21 and 22opening thereinto,

the movement of the axle 1n the transverse openings which are formed inproximity to the upper end of the arms 6 and 9. n

In operation the chamber 10 is filled with a lubricant, preferably asolid lubricant be-l ing used, and when it 1s desired to dispense thesame through the aperture 22 and into oww;

said plate being los the bore 2O 'of `the axle 19, pressure is exerted4on the screw-bolt 14, which as is evident normally lies in the lowerend'of said arm, and is actuated by-turningthe same Yso as to cause thecontents of said chamber to be dispensed therethrough and into ysaidaxle, so as to lubricate the trolley' wheel which is lmounted thereon.It is `o'f 'course obvious that after the chamber l0' has been ackedwith a lubricant, that one revolution of the screw-bolt -lll will besufficient to lubricate the trolley wheel which is mounted o'n theaxle19 for a. certain length ,of time.

It willbe understood that the above description and accompanyingdrawings comprehend lonly the general `and preferred embodiment of myinvention and that various minor changes in details of construction,proportion vand arrangement of the parts may be made within the scope ofthe'app ended Vvclaim and without sacrificing any ofthe advantages of myinvention.

Having thus fully ndescribed my invention what I Yclaim as new anddesire to secure by Letters Patent is A v,trolley harp including asubstantially Us'haped'body, one of the arms of said body being enlargedtransversely and provided with h la longitudinally extending lubricantchamber, an axle hav-ing its ends journaled through the arms of saidbody and'arranged @epics ofthispatent-maybe obtained for of saidr'stfmcirtioned aperture, vas and five cents earliuby addressing lthewashmgtonfaza Y:

to project to each side thereof, said axle provided with a centrallyarranged longitudinally extending compartment terminating short of theends thereof, said axle being t passed through said lubricant chamber,and provided with an aperture communicating :with ysaid compartment andwith said chamber, Asaidfaxle being further provided with an egressopeningto communicate with said compartment substantially intermediateits ends whereby the lubricantmay be supplied to the 'trolleypivheehthe. arms of said body portion provided: with receiving grooves adjacentbe vpassed through the ends of said axle beyiond the `outerFfacesfofsaid arms to lie in said grooves whereby said axle will be held againstturning `movement, said axle being removablev from either Vside of saidarms, and a force feed member to :be removably mounted in said lubricantc'hamber'to force the lubricant Vto said compartment by wfay or thepurpose specified., 1

Vlil-testimony ,whereofl aflixfmy signature in: presence-ofg-twcwitnesses.

'GEORGE L. BIRCH.

Witnesses:

BILLY gL. {@wlm, -GR'IT BLACK.:

Commissioner of Patents.

the ends of said axle, 4cotter pins to l

